FINANCIAL INSTRUMENTS (Tables)

3 Months Ended

Mar. 31, 2021

FINANCIAL INSTRUMENTS

Schedule of Fair Value on Recurring and Non-recurring Basis

	March 31, 2021
(thousands of dollars)	Level 1		Level 2		Level 3		Total
Current Assets
Equity securities	$	—	$	—	$	1,713	$	1,713
Total current assets recorded at fair value	$	—	$	—	$	1,713	$	1,713

	December 31, 2020
(thousands of dollars)	Level 1		Level 2		Level 3		Total
Current Assets
Equity securities	$	—	$	—	$	1,520	$	1,520
Total current assets recorded at fair value	$	—	$	—	$	1,520	$	1,520
Non-current Assets
Restricted cash	$	10	$	—		—	$	10
Total non-current assets recorded at fair value	$	10	$	—	$	—	$	10